题目

With the introduction of family planning policies in the 1970s, most Chinese teenagers have no brothers or sisters．They get to be the beloved（心爱的）__21__child．But they may not realize that they will have to “__22__” the love as their__23__ones grow old．They will have to__24__lots of old people—their parents, grandparents, their_  25  _parents and grandparents． China is becoming__26_  country． According to the United Nations, an aging society refers to one    27   10 percent or more of the population is over 60, or 7 percent or more is over 65. According to   我国南方沿海航线的中心是A.福州、厦门B.广州、香港C.广州、湛江D.海口、三亚